Quilters Select has the 6 1/2 "x 12 and 6 1/2" x 24. The rulers come in whole inch or 1/2" added. It's easy to get mixed up when you cut if you don't make sure which size you pick up to use. I have to double check my square ones to be sure of the correct size I want. 8 and 8 1/2 look about the same.